Heater



FIG. 1 is a right, front, top perspective view of a heater in accordancewith the present invention;

FIG. 2 is an elevation view of the front thereof;

FIG. 3 is an elevation view of the rear thereof;

FIG. 4 is an elevation view of the right side thereof;

FIG. 5 is an elevation view of the left side thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown in the drawings are for purposes of illustratingportions of the article and form no part of the claimed design.

CLAIM The ornamental design for a heater, as shown and described.